X = int(input())

if 400<=X and X<600:
  print(8)
elif 600<=X and X<800:
  print(7)
elif 800<=X and X<1000:
  print(6)
elif 1000<=X and X<1200:
  print(5)
elif 1200<=X and X<1400:
  print(4)
elif 1400<=X and X<1600:
  print(3)
elif 1600<=X and X<1800:
  print(2)
elif 1800<=X and X<2000:
  print(1) X = int(input()) X int(input()) int input() input if 400<=X and X<600:
  print(8)
elif 600<=X and X<800:
  print(7)
elif 800<=X and X<1000:
  print(6)
elif 1000<=X and X<1200:
  print(5)
elif 1200<=X and X<1400:
  print(4)
elif 1400<=X and X<1600:
  print(3)
elif 1600<=X and X<1800:
  print(2)
elif 1800<=X and X<2000:
  print(1) 400<=X and X<600 400<=X 400 X X<600 X 600 print(8) print 8 elif 600<=X and X<800:
  print(7) 600<=X and X<800 600<=X 600 X X<800 X 800 print(7) print 7 elif 800<=X and X<1000:
  print(6) 800<=X and X<1000 800<=X 800 X X<1000 X 1000 print(6) print 6 elif 1000<=X and X<1200:
  print(5) 1000<=X and X<1200 1000<=X 1000 X X<1200 X 1200 print(5) print 5 elif 1200<=X and X<1400:
  print(4) 1200<=X and X<1400 1200<=X 1200 X X<1400 X 1400 print(4) print 4 elif 1400<=X and X<1600:
  print(3) 1400<=X and X<1600 1400<=X 1400 X X<1600 X 1600 print(3) print 3 elif 1600<=X and X<1800:
  print(2) 1600<=X and X<1800 1600<=X 1600 X X<1800 X 1800 print(2) print 2 elif 1800<=X and X<2000:
  print(1) 1800<=X and X<2000 1800<=X 1800 X X<2000 X 2000 print(1) print 1 X = int(input()) int(input()) X
X = int(input())

if 400<=X and X<600:
  print(8)
elif 600<=X and X<800:
  print(7)
elif 800<=X and X<1000:
  print(6)
elif 1000<=X and X<1200:
  print(5)
elif 1200<=X and X<1400:
  print(4)
elif 1400<=X and X<1600:
  print(3)
elif 1600<=X and X<1800:
  print(2)
elif 1800<=X and X<2000:
  print(1)
